ProSomnus SPAC Presentation Deck

Current Treatment Options Deliver Low Levels of Disease Alleviation and are Costly Mechanism of Action OSA Indications Incumbent Therapy Limitations I I I CPAP X Forces Air Down Throat X Low adherence rates (<50% at months) X Expensive X Discomfort X Mild, Moderate & Severe X Mask leakage Social stigma Limited portability Note: Diagnosing physician for each treatment modality is a Sleep Physician X X X X Legacy OAT Positions Jaw Forward Arbitrary Jaw Thrust Mild & Moderate Bulky, uncomfortable Unhygienic / color change Lack of durability / reliability / predictability Largely manual titration (limits efficacy and increases cost) X Surgical Implant Stimulates Tongue X X X PROSOMNUS SLEEP TECHNOLOGIES X Upper Airway Stimulation Moderate & Severe (Failed CPAP) Relatively unproven Invasive / surgery Required Expensive Reimbursement complexities Only applicable to a subset of moderate / severe patients who are unable to use CPAP 27 STRICTLY CONFIDENTIAL

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